In article <mailman.581.1324405362.68562.bind-us...@lists.isc.org>, Matus UHLAR - fantomas <uh...@fantomas.sk> wrote:
> On 20.12.11 19:37, Martin T wrote: > >I have seen setups where one domain name has two address records. > >First IP address is in the ISP-A network and the other one is in the > >ISP-B network. In case I execute "host www.<domainname>.com", I always > >get two IP addresses as a reply and they always appear by turns. Am I > >correct, that setup like this provides redundancy as well as > >load-balancing? > > Kind of. It's much better to have real load-balancing and vailover by > multiple links or L3 load balancers. If you're really cheapskate and have a little scripting expertise you can do what we did before we went to hardware load balancing. Give your systems names with short TTLs in a dynamic zone. Have a watchdog process monitor the systems and remove any that don't respond. It's not generally fast enough to help individual clients but it can help the overall availability of a system. It's victim to browsers ignoring TTLs, of course, though I've never been able to verify such browser behaviour myself. Sam _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
